void *pool_alloc (struct pool *, size_t) MALLOC_LIKE;
void *pool_nalloc (struct pool *, size_t n, size_t s) MALLOC_LIKE;
void *pool_clone (struct pool *, const void *, size_t) MALLOC_LIKE;
void *pool_alloc (struct pool *, size_t) MALLOC_LIKE;
void *pool_nalloc (struct pool *, size_t n, size_t s) MALLOC_LIKE;
void *pool_clone (struct pool *, const void *, size_t) MALLOC_LIKE;